/*
* Copyright 2013 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.optaplanner.core.impl.localsearch.decider.acceptor.tabu.size;
import org.junit.Test;
import org.optaplanner.core.impl.localsearch.scope.LocalSearchPhaseScope;
import org.optaplanner.core.impl.localsearch.scope.LocalSearchStepScope;
import org.optaplanner.core.impl.solver.scope.DefaultSolverScope;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;
public class ValueRatioTabuSizeStrategyTest {
@Test
public void tabuSize() {
LocalSearchPhaseScope phaseScope = new LocalSearchPhaseScope(mock(DefaultSolverScope.class));
when(phaseScope.getWorkingValueCount()).thenReturn(100);
LocalSearchStepScope stepScope = new LocalSearchStepScope(phaseScope);
assertEquals(10, new ValueRatioTabuSizeStrategy(0.1).determineTabuSize(stepScope));
assertEquals(50, new ValueRatioTabuSizeStrategy(0.5).determineTabuSize(stepScope));
// Rounding
assertEquals(11, new ValueRatioTabuSizeStrategy(0.1051).determineTabuSize(stepScope));
assertEquals(10, new ValueRatioTabuSizeStrategy(0.1049).determineTabuSize(stepScope));
// Corner cases
assertEquals(1, new ValueRatioTabuSizeStrategy(0.0000001).determineTabuSize(stepScope));
assertEquals(99, new ValueRatioTabuSizeStrategy(0.9999999).determineTabuSize(stepScope));
}
}